Write each rate as a fraction in lowest terms:
A ball rolls
30
\displaystyle {30}
30
feet in
40
\displaystyle {40}
40
seconds
feet/sec
Do not enter the units
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Enter your answer as a reduced fraction (like 5/3, not 10/6) or as an integer (like 4 or -2)
Do not enter mixed numbers
Enter DNE for Does Not Exist, oo for Infinity